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Date:   Wed, 28 Aug 2019 09:17:54 -0700
From:   Andi Kleen <ak@linux.intel.com>
To:     Peter Zijlstra <peterz@infradead.org>
Cc:     kan.liang@linux.intel.com, acme@kernel.org, mingo@redhat.com,
        linux-kernel@vger.kernel.org, tglx@linutronix.de, jolsa@kernel.org,
        eranian@google.com, alexander.shishkin@linux.intel.com
Subject: Re: [RESEND PATCH V3 3/8] perf/x86/intel: Support hardware TopDown
 metrics
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> This really doesn't make sense to me; if you set FIXED_CTR3 := 0, you'll
> never trigger the overflow there; this then seems to suggest the actual

The 48bit counter might overflow in a few hours.

-Andi